Send a compact rule card
Choose one title with a readable outcome and send its link with the exact rules. For example: “Coin Drop, two attempts each, report the total displayed points by Sunday 8 pm NZDT; highest total wins; equal totals share first.” That message specifies the game, limit, score, deadline and tie rule without asking people to find the title themselves.
Keep the thread easy to follow
Ask everyone to reply in the same thread with their name and result, and mark a completed turn so the group does not mistake silence for a score. If you want evidence, request a screenshot of the end state, but do not ask anyone to reveal private profile details. The result is a friendly record, not a verified competition leaderboard.
Close the round cleanly
At the deadline, list only the results that follow the agreed rule. If the game changes during the round or a link stops working, pause the challenge and decide whether everyone gets a restart. For a recurring chat activity, rotate who chooses the game and keep the time window predictable. This prevents one organizer from having to negotiate every detail again.
Questions about group chat game challenges
Does the group chat need a game bot?
No. A shared game link and one clear message are enough for a manual challenge. Oneshotgems does not require a group-chat integration for friends to compare separate attempts.
Can everyone play at the same time?
They can choose to, but the linked Oneshotgems game is not a live multiplayer room. The challenge works by recording individual attempts in the chat.